Although Lucas takes Anna as his date to the Tree Hill High Formal, he finds himself with Brooke at the end of the night. Meanwhile, Haley's musical obligations to Chris cause her to arrive late to the formal, which angers Nathan. Peyton finds herself struggling with the growing temptation to turn to drugs.

Haley is surprised when her older sister Taylor comes to town, but not as shocked as Nathan, who recognizes Taylor from a past tryst. Meanwhile, Brooke and Felix decide to become boyfriend and girlfriend, while Jake surprises Peyton when he shows up in Tree Hill. Anna confides a deep secret to Lucas.